أرسل هذا في رسالة قصيرة: Surface treatment by low energy metal ion irradiation

  ______     ___      ______   _    _    _____    
 /_   _//   / _ \\   /_   _// | || | || |  __ \\  
 `-| |,-   / //\ \\  `-| |,-  | || | || | |  \ || 
   | ||   |  ___  ||   | ||   | \\_/ || | |__/ || 
   |_||   |_||  |_||   |_||    \____//  |_____//  
   `-`'   `-`   `-`    `-`'     `---`    -----`